Title:
Electronic stethoscope
United States Patent 3160708
US Patent References:
/2419471.html
- - 2419471

/2755336.html
- - 2755336

/2777903.html
- - 2777903

Stereophonic reception
- - 2827514

Stethoscopic device
- - 3087016


Inventors:
Andries, Francis M.
Center, John L.
Rabalais, Gordon J.
Publication Date:
12/08/1964
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Assignee:
TEXAS INSTRUMENTS INC
Primary Class:
381/67
Other Classes:
181/131, 381/338, 381/331, 381/115, 381/102, 600/586
International Classes:
A61B7/04; A61B7/00
Foreign References:
FR821374A